So currently Laila and Kevin are trying to add post-commit review functionality to Review Board. Today we added a select field in the admin interface that allow the administrator to toggle between the two. This value is saved in the config text blob. We are now trying to tweak the new review page so that there is a difference between the pre/post commit. Hopefully we can get the most of the U.I. finished today.
Sincerely, Kevin and Laila